The city of Jerusalem observes holiday celebrations from various faiths. Which holiday celebrated there is known as the 'Feast of Dedication'?

Hanukkah

Which seasonal British alcoholic beverage is made with heated cider and spices? Who famously sang "All I Want for Christmas Is You"? Who founded the "I Hate Rachel Green" club with Ross in high school? Which precious stone is formed by oysters? What is Mega Man also called in Japan?